CN102305163B - Automobile engine start control system and control method thereof - Google Patents
Automobile engine start control system and control method thereof Download PDFInfo
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- CN102305163B CN102305163B CN 201110236444 CN201110236444A CN102305163B CN 102305163 B CN102305163 B CN 102305163B CN 201110236444 CN201110236444 CN 201110236444 CN 201110236444 A CN201110236444 A CN 201110236444A CN 102305163 B CN102305163 B CN 102305163B
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Abstract
The invention discloses an automobile engine start control system and a control method thereof. The automobile engine start control system comprises an ignition key, a starting motor, a storage battery, a starting relay, an engine electric control unit, an automatic gearbox control unit and an automobile body controller, wherein the starting relay is electrically connected with the starting motor and the storage battery respectively; the engine electric control unit and the automatic gearbox control unit are respectively connected with the automobile body controller via a CAN (controller area network) bus; and the starting relay and the ignition key are connected with the automobile body controller. The control method of the automobile engine start control system is characterized in that a BCM (body control module) obtains an engine speed signal and the gear position of a gearbox and carries out logical judgment according to the engine speed and the gear position of the gearbox so as to control the starting relay to be closed or opened and further control the starting motor to be started. The automobile engine start control system and the control method thereof provided by the invention have the advantages of realizing intelligent engine start control, guaranteeing the safety of vehicles and users when the engine is started, and providing protection for the starting motor and the storage battery.
Description
Technical field
The present invention relates to a kind of car engine start control system and controlling method.
Background technique
Motor car engine is to be rotated to drive the flywheel rotation of motor by the Vehicular direct-current actuating motor, realizes starting.Fig. 1 is the engine start control system structural representation, and the starting process of motor is: when ignition key rotates to the START shelves from the ON shelves, and ignition key 1 closure; Starter relay 2 closures, storage battery 3 give actuating motor 4 power supplies, and actuating motor 4 drives actuation gear and produces mechanical motion, and driving mechanism carries out the rotation of transmission flywheel driven, pilots engine.After the engine start, when ignition key is got back to the ON shelves from the START shelves, the mechanical structure of actuating motor again can with the flywheel ring gear automatic trip from, do not disturb the normal operation of motor.
Automobile starting motor belongs to the valuable parts in the automobile, can not damage easily, still, in order to prolong the working life of actuating motor, appropriate using method must be arranged.Because present engine start control system and controlling method all is by the adhesive of switch on control starter relay, and the electric energy of storage battery is offered actuating motor, actuating motor drives motor and turns round.Engine start control system and controlling method are fairly simple, do not have the engine start protective function, when car engine start, following problem easily occurs.
At first, when car engine start, only have when the automobile variable speed gear box is in neutral gear (N shelves) or Parking shelves (P shelves) state, motor car engine ability ignition start, otherwise easily because of the actuating motor brute force rotation of moment, make moving vehicle; In a single day the place ahead has obstacle, will damage car or harm personal safety.And present engine start control method can't be judged automobile variable speed gear box when automotive ignition starts, vehicle and user's Security in the time of can't guaranteeing engine start.
Secondly, be the protection starting motor, the time of each engine start must not be long, if automobile starting motor on-load continuous operation time was above 5～8 seconds; After being engine start, ignition key did not disconnect in continuous 5～8 seconds, and actuating motor will work on, and flywheel gear can drive actuating motor actuation gear High Rotation Speed, accelerated to damage the actuating motor overrunning clutch.And present engine start control method can't be judged actuating motor continuous current"on"time, easily causes actuating motor to damage, and affects the working life of actuating motor and storage battery.
Again, if after the engine start, ignition key is connected again, then the actuating motor actuation gear will collide with the flywheel of High Rotation Speed and damage actuating motor, thereby can not again start under the engine start situation by mistake.And present engine start control method can't prevent that actuating motor from being started again, easily causes actuating motor to damage.
At last, if motor initial start-up failure, the time lag that motor starts again need be controlled in the rational scope, and is too little such as the engine start time lag, and then continuous deep discharge in the storage battery short time will affect the working life of storage battery.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of car engine start control system and controlling method that can effectively guarantee vehicle and user's Security is provided; Further aim of the present invention is to provide a kind of can be effectively provides car engine start control system and the controlling method of protection for actuating motor and storage battery.
To achieve these goals, the technical solution used in the present invention is:
Described car engine start control system, comprise ignition key, actuating motor, storage battery and starter relay, described starter relay is connected with described actuating motor and storage battery respectively, also comprises engine electric-controlled unit, automatic transmission case control unit and car body controller; Described engine electric-controlled unit and automatic transmission case control unit are connected with described car body controller by the CAN bus respectively; Described starter relay and ignition key are connected with described car body controller.
Described car body controller inside is provided with timer.
The controlling method of described car engine start control system specifically may further comprise the steps;
(1) ignition key position judgment step is used for judging whether ignition key is closed;
BCM detects the ignition key closure, opens internal timer, and enters next step;
It is not closed that BCM detects ignition key, returns to ignition key position judgment step;
(2) engine speed determining step is used for judging whether motor starts;
BCM detects engine speed more than or equal to 500r/min, and then motor starts, and BCM control starter relay disconnects, and turns back to step (1);
The rotating speed of motor is less than 500r/min, and then motor unstart enters next determining step;
(3) automatic speed changing gear box determining step, whether the gear of automatic transmission case is in P shelves or N shelves when being used for judging engine start;
The gear that BCM detects automatic transmission case is in P shelves or N shelves, and BCM disconnects other vehicle body electric consumer loads; The adhesive of simultaneously BCM control starter relay, storage battery provides electric energy to actuating motor, and actuating motor drives engine start;
BCM detects the gear of automatic transmission case not in P shelves or N file location, returns to automatic speed changing gear box determining step.
The controlling method of described car engine start control system increases following steps behind described automatic speed changing gear box determining step;
(4) engine speed determining step again is used for again judging whether motor is started;
BCM detects engine speed more than or equal to 500r/min, and then motor starts, and BCM control starter relay disconnects, and turns back to step (1);
The rotating speed of motor is less than 500r/min, and then motor unstart returns to again determining step of engine speed;
(5) motor starting time interval determining step again is used for determining the time lag between twice starting of motor;
As interval greater than or equal 15 seconds, then return the engine speed determining step of step (2);
As the time lag less than 15 seconds, the automatic disconnection of BCM control ignition key.
The controlling method of described car engine start control system increases following steps behind described automatic speed changing gear box determining step;
(4) ignition key continues the closing time determining step, is used for judging the actuating motor continuous working period;
BCM detects ignition key and continues closing time above 5 seconds, and BCM forces the control starter relay to disconnect, and actuating motor quits work; The vehicle body electric consumer load that the BCM recovery is forced to turn off enters next step;
BCM detects lasting closing time and is no more than 5 seconds, turns back to ignition key and continues the closing time determining step;
(5) motor starting time interval determining step again is used for determining the time lag between twice starting of motor;
As interval greater than or equal 15 seconds, then return the engine speed determining step of step (2);
As the time lag less than 15 seconds, the automatic disconnection of BCM control ignition key.
The controlling method of described car engine start control system increases following steps behind described automatic speed changing gear box determining step;
(4) ignition key position determining step again is used for guaranteeing that actuating motor quits work in the starting situation of motor;
BCM detects ignition key and is in the ON file location, and then BCM control starter relay disconnects, and actuating motor is not worked; The vehicle body electric consumer load that the BCM recovery is forced to turn off enters next step;
Not to be in the ON file location such as ignition key, return again determining step of igniting key position;
(5) motor starting time interval determining step again is used for determining the time lag between twice starting of motor;
As interval greater than or equal 15 seconds, then return the engine speed determining step of step (2);
As the time lag less than 15 seconds, the automatic disconnection of BCM control ignition key.
Beneficial effect of the present invention is: described car engine start control system and controlling method, by introducing engine electric-controlled unit, automatic transmission case control unit and car body controller, realized the intellectuality control of engine start; Vehicle and user's safety in the time of at first can guaranteeing engine start; Secondly, can avoid actuating motor to switch on for a long time by control, thereby prolong the working life of actuating motor and storage battery; Again, can avoid in the situation that motor starts, again to the actuating motor power supply, thereby avoid the actuating motor gear failure; Again secondly, can effectively control the time lag of double ato unit, avoid the deep discharge of storage battery, for storage battery provides protection; At last, introduce existing hardware resource, realize the intelligent control of engine start, can additionally not increase hardware cost, and possess good control effect.
Description of drawings
The below is briefly described the content of each width of cloth accompanying drawing expression of specification of the present invention and the mark among the figure:
Fig. 1 is car engine start control system structural representation in the prior art;
Fig. 2 is car engine start control system structural representation among the present invention;
Fig. 3 is car engine start controlling method flow chart among the present invention;
Mark among the above-mentioned figure is:
1, ignition key, 2, starter relay, 3, storage battery, 4, actuating motor, 5, car body controller, 6, the CAN bus, 7, engine electric-controlled unit, 8, the automatic transmission case control unit.
Embodiment
The below contrasts accompanying drawing, and the description by to embodiment is described in further detail the specific embodiment of the present invention.
As shown in Figure 2, described car engine start control system, comprise ignition key 1, actuating motor 4, storage battery 3 and starter relay 2, starter relay 2 is electrically connected with actuating motor 4 and storage battery 3 respectively, also comprises engine electric-controlled unit 7, automatic transmission case control unit 8 and car body controller 5; Engine electric-controlled unit 7 and automatic transmission case control unit 8 are connected with car body controller 5 by CAN bus 6 respectively; Starter relay 2 and ignition key 1 are connected with car body controller 5.
The controlling method of described car engine start control system, by 2 adhesives of control starter relay, make storage battery 3 provide electric energy to actuating motor 4, BCM5 detects the closed situation of ignition key 1, simultaneously carry out 6 communications of CAN bus with Engine ECU 7, receive engine rotational speed signal by CAN bus 6, judge whether motor starts successfully; BCM5 and automatic transmission case TCU8 carry out 6 communications of CAN bus, judge by the CAN bus whether the gear when front gear box is in P shelves or N shelves; BCM carries out logic according to the gear condition of engine speed and gearbox and judges, controls starter relay 2 adhesives or unlatching, the starting of control actuating motor.
When car engine start, the actuating motor coil current is very large, reaches amperes up to a hundred, in order to guarantee car engine function normal starting, usually when engine start, require to cut off the vehicle body appliances power sources such as car bulb, guaranteeing provides maximum electric energy for automobile starting motor.
As shown in Figure 3, the controlling method of described car engine start control system may further comprise the steps;
(1) ignition key position judgment step is used for judging whether ignition key is closed;
When BCM detected ignition key and is in the START shelves, ignition key was closed, opened internal timer, and entered next step, namely entered the engine speed determining step;
It is not closed that BCM detects ignition key, returns to ignition key position judgment step;
(2) engine speed determining step is used for judging whether motor starts;
BCM obtains the tach signal of motor by the CAN bus, and make the following judgment: engine speed is more than or equal to 500r/min, then motor starts, BCM control starter relay disconnects, storage battery can not be powered to actuating motor, actuating motor is not worked, and turns back to ignition key position judgment step;
The rotating speed of motor is less than 500r/min, and then motor unstart enters next determining step, namely enters automatic speed changing gear box determining step;
(3) automatic speed changing gear box determining step, whether the gear of automatic transmission case is in P shelves or N shelves when being used for judging engine start;
BCM obtains the automatic transmission case gear signal by the CAN bus, and makes the following judgment: the gear of automatic transmission case is in P shelves or N shelves, and BCM disconnects other vehicle body electric consumer loads; The adhesive of simultaneously BCM control starter relay, storage battery provides electric energy to actuating motor, and actuating motor drives engine start;
The gear of automatic transmission case is not in P shelves or N file location, at this moment the user should detect the gear positions of automatic transmission case, guarantee to be in P shelves or N file location, again enter automatic speed changing gear box determining step, until the gear of automatic transmission case is in P shelves or N file location, BCM disconnects other vehicle body electric consumer loads, the adhesive of simultaneously BCM control starter relay, storage battery provides electric energy to actuating motor, and actuating motor drives engine start.
Described car engine start controlling method, intelligent control by BCM, can accurately control and judge engine start, in the time of simultaneously can guaranteeing engine start the automobile variable speed gear box in P shelves or N file location, vehicle and user's Security in the time of can guaranteeing engine start.
The controlling method of described car engine start control system increases following steps behind described automatic speed changing gear box determining step;
(4) engine speed determining step again is used for again judging whether motor is started;
BCM obtains the tach signal of motor again by the CAN bus, and make the following judgment: engine speed is more than or equal to 500r/min, then motor starts, BCM control starter relay disconnects, storage battery can not be powered to actuating motor, and actuating motor quits work, and BCM connects the electrical equipment of forcing disconnection, enter next determining step, namely enter again starting time interval determining step of motor;
The rotating speed of motor is less than 500r/min, and then motor unstart turns back to again determining step of engine speed;
(5) motor starting time interval determining step again is used for determining the time lag between twice starting of motor;
The time lag between timer record the ignition key closed and for the first time inferior closure second time is judged the time lag between twice starting of motor;
As interval greater than or equal 15 seconds, then enter previous engine speed determining step;
As the time lag less than 15 seconds, the automatic disconnection of BCM control ignition key.
The automatic speed changing gear box is when P shelves or N shelves, and BCM judges engine speed again, and then judges whether motor is started; Vehicle and user's safety when further guaranteeing engine start; Can effectively control simultaneously the time lag of double ato unit, avoid the deep discharge of storage battery, for storage battery provides protection.
The controlling method of described car engine start control system increases following steps behind described automatic speed changing gear box determining step;
(4) ignition key continues the closing time determining step, is used for judging the actuating motor continuous working period;
The timer record ignition key continues closing time, namely record ignition key and continue to be in time of START shelves, BCM detects ignition key to be continued closing time and surpasses 5 seconds, and BCM forces the control starter relay to disconnect, actuating motor quits work, and automatic and motor disengaging; The vehicle body electric consumer load that simultaneously BCM recovery is forced to turn off enters next step;
BCM detects lasting closing time and is no more than 5 seconds, turns back to ignition key and continues the closing time determining step;
(5) motor starting time interval determining step again is used for determining the time lag between twice starting of motor;
The time lag between timer record the ignition key closed and for the first time inferior closure second time is judged the time lag between twice starting of motor;
As interval greater than or equal 15 seconds, then enter the engine speed determining step;
As the time lag less than 15 seconds, the automatic disconnection of BCM control ignition key.
Internal timer by BCM detects the current"on"time that the lasting closing time of ignition key is controlled actuating motor, BCM is strict controlled in the current"on"time of actuating motor below 5 seconds, can avoid actuating motor to switch on for a long time, provide protection to actuating motor and storage battery, prolong the working life of actuating motor and storage battery; Can effectively control simultaneously the time lag of double ato unit, avoid the deep discharge of storage battery, for storage battery provides protection.
The controlling method of described car engine start control system increases following steps behind described automatic speed changing gear box determining step;
(4) ignition key position determining step again is used for guaranteeing that actuating motor quits work in the starting situation of motor;
BCM detects the position of ignition key, is in the ON file location such as ignition key, and then BCM control starter relay disconnects, and storage battery can not be powered to actuating motor, and actuating motor is not worked, and automatic and motor disengaging; The vehicle body electric consumer load that simultaneously BCM recovery is forced to turn off enters next step;
Not to be in the ON file location such as ignition key, return again determining step of igniting key position;
(5) motor starting time interval determining step again is used for determining the time lag between twice starting of motor;
The time lag between timer record the ignition key closed and for the first time inferior closure second time is judged the time lag between twice starting of motor;
As interval greater than or equal 15 seconds, then enter the engine speed determining step;
As the time lag less than 15 seconds, the automatic disconnection of BCM control ignition key.
Detect the position of ignition key by BCM and further judge whether start of motor car engine; In the situation that motor car engine is started; the automatic disconnection starter relay; storage battery can not be powered to actuating motor; actuating motor is not worked and automatic and motor disengaging; can prevent under the engine start state; storage battery to the actuating motor power supply, can provide protection for actuating motor again, avoids the actuating motor gear failure.
The above has carried out exemplary description to the present invention, and obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way, and a kind of or several combination among the above embodiment is technological scheme of the present invention; As long as adopted simultaneously the improvement of the various unsubstantialities that method of the present invention design and technological scheme carry out, or without improvement design of the present invention and technological scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (4)
1. the controlling method of a car engine start control system, described start control system, comprise ignition key (1), actuating motor (4), storage battery (3) and starter relay (2), described starter relay (2) is electrically connected with described actuating motor (4) and storage battery (3) respectively, also comprises engine electric-controlled unit (7), automatic transmission case control unit (8) and car body controller (5); Described engine electric-controlled unit (7) and automatic transmission case control unit (8) are connected with described car body controller (5) by CAN bus (6) respectively; Described starter relay (2) and ignition key (1) are connected with described car body controller (5); Described car body controller (5) inside is provided with timer; It is characterized in that: specifically may further comprise the steps;
(1) ignition key position judgment step is used for judging whether ignition key is closed;
Car body controller detects the ignition key closure, opens internal timer, and enters next step;
It is not closed that car body controller detects ignition key, returns to ignition key position judgment step;
(2) engine speed determining step is used for judging whether motor starts;
Car body controller detects engine speed more than or equal to 500 r/min, and then motor starts, and car body controller control starter relay disconnects, and turns back to step (1);
The rotating speed of motor is less than 500 r/min, and then motor unstart enters next determining step;
(3) automatic speed changing gear box determining step, whether the gear of automatic transmission case is in P shelves or N shelves when being used for judging engine start;
The gear that car body controller detects automatic transmission case is in P shelves or N shelves, and car body controller disconnects other vehicle body electric consumer loads; The adhesive of simultaneously car body controller control starter relay, storage battery provides electric energy to actuating motor, and actuating motor drives engine start;
Car body controller detects the gear of automatic transmission case not in P shelves or N file location, returns to automatic speed changing gear box determining step.
2. according to the controlling method of car engine start control system claimed in claim 1, it is characterized in that: behind described automatic speed changing gear box determining step, increase following steps;
(4) engine speed determining step again is used for again judging whether motor is started;
Car body controller obtains the tach signal of motor again by the CAN bus, and make the following judgment: engine speed is more than or equal to 500 r/min, then motor starts, car body controller control starter relay disconnects, storage battery can not be powered to actuating motor, actuating motor quits work, and car body controller is connected the electrical equipment of forcing disconnection, enters next determining step;
The rotating speed of motor is less than 500 r/min, and then motor unstart returns to again determining step of engine speed;
(5) motor starting time interval determining step again is used for determining the time lag between twice starting of motor;
As interval greater than or equal 15 seconds, then return the engine speed determining step of step (2);
As the time lag less than 15 seconds, the automatic disconnection of car body controller control ignition key.
3. according to the controlling method of car engine start control system claimed in claim 1, it is characterized in that: behind described automatic speed changing gear box determining step, increase following steps;
(4) ignition key continues the closing time determining step, is used for judging the actuating motor continuous working period;
Car body controller detects ignition key and continues closing time above 5 seconds, and car body controller forces the control starter relay to disconnect, and actuating motor quits work; The vehicle body electric consumer load that the car body controller recovery is forced to turn off enters next step;
Car body controller detects lasting closing time and is no more than 5 seconds, turns back to ignition key and continues the closing time determining step;
(5) motor starting time interval determining step again is used for determining the time lag between twice starting of motor;
As interval greater than or equal 15 seconds, then return the engine speed determining step of step (2);
As the time lag less than 15 seconds, the automatic disconnection of car body controller control ignition key.
4. according to the controlling method of car engine start control system claimed in claim 1, it is characterized in that: behind described automatic speed changing gear box determining step, increase following steps;
(4) ignition key position determining step again is used for guaranteeing that actuating motor quits work in the starting situation of motor;
Car body controller detects ignition key and is in the ON file location, and then car body controller control starter relay disconnects, and actuating motor is not worked; The vehicle body electric consumer load that the car body controller recovery is forced to turn off enters next step;
Not to be in the ON file location such as ignition key, return again determining step of igniting key position;
(5) motor starting time interval determining step again is used for determining the time lag between twice starting of motor;
As interval greater than or equal 15 seconds, then return the engine speed determining step of step (2);
As the time lag less than 15 seconds, the automatic disconnection of car body controller control ignition key.
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| CN 201110236444 CN102305163B (en) | 2011-08-17 | 2011-08-17 | Automobile engine start control system and control method thereof |
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| CN 201110236444 CN102305163B (en) | 2011-08-17 | 2011-08-17 | Automobile engine start control system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103821653B (en) * | 2013-01-11 | 2016-02-03 | 安徽省智纯动力科技有限公司 | Starter motor start protection logic controller |
| CN103437892B (en) * | 2013-09-04 | 2016-03-09 | 阿特拉斯科普柯(南京)建筑矿山设备有限公司 | The starting method of motor and system |
| CN103835859B (en) * | 2014-02-20 | 2016-08-17 | 金龙联合汽车工业（苏州）有限公司 | Passenger vehicle intelligent starting protection system |
| CN106150821A (en) * | 2015-04-28 | 2016-11-23 | 上海日野发动机有限公司 | Intelligent starter relay system, engine system and the vehicle of electromotor |
| CN104976012B (en) * | 2015-06-26 | 2017-07-07 | 安徽合力股份有限公司 | For industrial vehicle intelligence start stop system and intelligent start-stop method |
| CN104963799B (en) * | 2015-07-13 | 2017-09-22 | 安徽江淮汽车集团股份有限公司 | A kind of vehicle launch control device |
| CN105059223A (en) * | 2015-08-20 | 2015-11-18 | 天津光电新亚电子通信技术有限公司 | Intelligent power supply system and power supply method of vehicle-mounted terminal |
| CN105240183B (en) * | 2015-11-02 | 2019-01-08 | 北京新能源汽车股份有限公司 | Control method and device for starting motor |
| CN106194542B (en) * | 2016-08-09 | 2018-01-16 | 金龙联合汽车工业（苏州）有限公司 | A kind of automobile start control and start protection method based on CAN |
| CN106891803A (en) * | 2017-02-24 | 2017-06-27 | 浙江春风动力股份有限公司 | A kind of day portable lighter control method, day portable lighter controller and motor vehicles |
| CN110360044A (en) * | 2019-06-28 | 2019-10-22 | 浙江吉利控股集团有限公司 | A kind of starter running protection control system and its control method and automobile |
| CN110789340A (en) * | 2019-11-19 | 2020-02-14 | 安徽安凯汽车股份有限公司 | Neutral position protection method for school bus gearbox |
| CN111550345B (en) * | 2020-05-29 | 2022-04-26 | 潍柴动力股份有限公司 | Cold start control method and device and electronic equipment |
| CN113685299A (en) * | 2021-09-08 | 2021-11-23 | 馨联动力(曲阜)有限公司 | Low-temperature cold start control method for P-gear engine of hybrid electric vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4306624B2 (en) * | 2005-02-25 | 2009-08-05 | 株式会社デンソー | Starter control device |
| CN101223354B (en) * | 2005-05-18 | 2011-08-03 | 富士通天株式会社 | Engine start control device and method |
| JP2007113460A (en) * | 2005-10-19 | 2007-05-10 | Nissan Motor Co Ltd | Engine start control device and engine start control method |
| KR101189221B1 (en) * | 2006-03-15 | 2012-10-09 | 현대자동차주식회사 | Engine start control system of automatic transmission vehicle |
| EP2169212B1 (en) * | 2008-09-30 | 2019-02-20 | Fujitsu Ten Limited | Engine control apparatus and engine control method |
| CN101767586B (en) * | 2008-12-26 | 2014-04-30 | 比亚迪股份有限公司 | System, control system and control method for safe starting without keys |
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